Structural concrete beam



Cit

Patented Feb. 12, 1929.

UNITED srATss PATENT OFFICE.

WILLIAM H. EVERS AND JOHN W. SHIMEK, 01? LAKEWOOD, OHIO, ASSIGNORS TO THE R. C. PRODUCTS COMPANY, CLEVELAND, 01-510, A

CORPORATION OF OHIO.

STRUCTURAL corroitn'rta ennui.

Application filed April 2,

Our invention relates to concrete beams which are used in structural work such as buildings, retaining walls and the like, its object being to provide a beam structure economical of construction, simple in its application and efficient in the performance of its function whereby the stretchers and headers in the structure in which thebeams are used may be inter-connected as is required.

Specifically, our invention constitutes an improvement in the structure shown, described and claimed in U. S. Patent No. 1,3 10,-

670, issued to Pease and Suloff, May 18, 1920.

Our said invention consists in means hereinafter fully described and particularly pointed out in the claims.

In the annexed drawing:

Figure 1 represents a perspective view of a fragmentary part of a wall structure including a beam embodying our invention and used as a header.

Fig. 2 represents a perspective view of such a beam detached.

Fig. 3 represents a section taken upon the plane indicated by line III-J11, Fig. 1.

Fig. 4 represents a section taken upon the plane indicated by line IV IV, Fig. 1.

In the illustrated embodiment of our in vention, we have shown the latter used as a header in combination with stretchers of ordinary or usual construction and as applied to a retaining wall.

The said header has its main or body por tion 1 of usual I-beam section. The end or ends 2 however, which interlock with the stretches are each provided with two projections l4: which extend from the faces 5-5 of the beam flanges 66 and intermediately of the beam ends. These projections are made integral parts of the beam structure and of a section such as will cause them to fit in and correspond to the space between the flanges 77 of the stretchers, a sufficient reduction of such section being adopted, as shown by the space 8, Fig. 4, which introduces a degree of desired flexibility in the completed structure. These projections therefore act as filler blocks. a

hat would in an ordinary I-beam constitute a free and open channel. space between the flanges 66, and heretofore filled by separate filler blocks, is in our improved beam filled in adjacent to the projection 4l-4, so that the web part of the beam at such location is reinforced against compression, by additional concrete 10, which also forms an integral part of the beam.

We prefer to bring this reinforcing material out so as to terminate in the lateral planes the flanges, so that a section taken through the projections and perpendicular to the web 11 of the beam, will be rectangular.

It will also be noted that as a result of the abovedescribed structure, the lateral dimension of the sectional area of the reinforced part of the beam and in a plane intersecting the beam web parallel with the faces of the beam flanges, is greater than that of the web, as clearly shown. in Fig. 3.

lVhen these beams form elements of a structure such as is illustrated, these reinforced ends are, as is usual. laid so as to span two contiguous ends of the stretchers, as shown in Fig. 1.

The reinforcing portion 10 is preferably joined to the web 11 of the beam by a tapered portion 12, so as to provide the section shown in Fig. 3.

As will be understood by those skilled in the art, one or both ends may be constructed as shown, and the reinforced portion of the beam may be placed at any part longitudinally of the beam according to the relative location of the stretchers. Further, but one flange portion may be provided with a projection, as would occur should the beam form the lowermost, uppermost, or extreme lateral member of the wall or other structure of which it forms a part.

By means of the above-described form of beam, the required reinforcement and consequent resistance to compression is supplied at the place of greatest compression by means of a unitary structure and hence without separate and detached filler blocks, such as are used in the said previously patented device, the advantage of which will be apparent to those skilled in the art.

What we claim is:

1. A. concrete beam of unitary structure mainly of I-beam cross-section, )rovided with a projection extending outwardly from the face of one of the beam flanges, the lateral dimension of the sectional area of the beam, in a plane intersecting the beam web and paral lel with the faces of the beam flanges, and inwardly adjacent to said projection, being greater than that of said web.

2. A concrete beam of unitary structure, mainly of I-beam section and provided with a portion Whose cross-section extends outwardly beyond the plane of the face of one of the flanges and outwardly beyond the plane of one face of the beam web.

3. A concrete beam of unitary structure mainly of I-bearn crosssection, and provided with a portion whose section in a plane intersecting the beam web and parallel with the flange faces is materially greater in dimension than, that of the beain web and with a projection extending outwardly beyond the planeof one of the flange faces and adjacent to the said portion of increased sectional area.

4. A concrete beam mainly of I-beam crosssection having an integral projection extending outwardly from the face of one of the beam flanges, that portion of the channel space which would in an ordinary I-beam lie between the flanges thereof and adjacent to 7 said projection containing reinforcement forming an integral part of the beam.

5. A concrete longitudinally-channelee beam of unitary structure formed with a rcinforcing portion extended outwardly so as to interrupt the continuity of the channel space, said beam also being formed with a projection extended outwardly from one face thereof and adjacently said reinforced portion, for the purpose set forth. \a

6. A concrete longitudinally-channeled beam of unitaryrstructure formed witha reinforcing portion extended outwardly transversely of the channel space and terminating tion; for the purpose set forth,

Signed by us this 13th day of March, 1925.

WILLIAM H. Evens, JOHN W. srmyrnn. 

